I noticed question 29 has provided the wrong answer to the question. Question 29 says, "In XP, who packages the project’s information for presentation to executives and peers and keep plans synchronized with reality." The answer that is identified as correct is, "Project Manager". That answer is WRONG. The correct answer is "XP Coach". In the book "The Art of Agile Development", James Shore, he sates in chapter 3 that "One of the most important things the coaches can do is to help the team interact with the rest of the organization. They help the team generate organizational trust and goodwill, and they often take responsibility for any reporting needed

One of the most important things the coaches can do is to help the team interact with the rest of theorganization. They help the team generate organizational trust and goodwill, and they often takeresponsibility for any reporting needed.

The project manager

Project managers help the team work with the rest of the organization. They are usually good at coachingnonprogramming practices. Some functional managers fit into this role as well. However, most projectmanagers lack the technical expertise to coach XP’s programming practices, which necessitates theassistance of a programmer-coach.Project managers may also double as customers.

So both the roles help in working with rest of the organization. we look coach focusing more on mindset and project manager more focusing on managerial issues